Rotary rod weeder



Sept. 18, 1928.

N. JACKSON ROTARY ROD WEEDER Filed Nov. 5, 1926 2 Sheets-Sheet lxyvexyfor' N. ducksm] Sept. 18, 1928. 1,684,992

N. JACKSON ROTARY ROD WEEDER Filed Nov. 5, 1926 2 Sheets-Sheet. 2

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\ more apparent Patented Sept. 18, 1928. j

lUurren STATES PATENT orifice.;

NELSON JACKSON, OF SASKATOON, SASKATCHEWAN', CANADA., .ASSIGNOBJCF ONE- FOURTH TO ARTHUR DUNCAN, F SASKATGON, CANADA.

ROTARY non wennen.

Application led November .5, 1926.

frame supported by three wheels arranged substantially in a. V-shaped formation, such arrangement permitting the rmachine as a whole to freely ride the various irregularities encountered in the ground surface and without one section interfering in any way with1 the work of the adjacent section.

A further object of the invention is to con-- struct a machine wherein the several sect-ions present rigid frames and wherein the rotary rod ofeach frame is adjustably suspended to permit of varying the depth in the ground at which the rod works.

A further-object ofthe invention is to construct a section having the frame supported by two forward ground wheels and a rear centrally disposed castor wheel adjustable in respect to the section frame and to suspend f the rotary rod such that it is adjusted in respect to the ground by the adjustment given the castor wheel. l

A further object is to construct a simple, durable and effective drive for the rod.

1With they above more important and other minor objects in view, which will become as the description proceeds, the invention consists essentially in the arrangement and construction of parts hereinafter more particularly described, reference being had to the accompanying drawings, in which :-v

Fig. 1-is a plan view of a weeder formed from two sections and embodying my invention.

Fig. 2 is an end View of the machine.

Fig. 3 is a perspective view showingthe manner in which the rod is driven.

Fig. 4 is a perspective view showing the lifting crank and parts associated therewith.

Fig. 5 is a side view of the shoe and parts associated therewith.

Fig. 6 is a horizontal sectional view at G-G Fig; 5.

Fig. 7 is a. vertical sectional view` at 7--7 Figure .-6.

FigzB isa vertical sectional view at 8 8 Figure 6.

Fig. 9 is an enlarged detailed vertical sectional view atl9-9 Figure 1.

Serial No. 146,468.

In the drawings like characters of reference indicate corresponding parts in the sev-- eral figures.

The machine which I provide presents severa-l sections and as the sections, indicated generally by the reference numerals A and B, .are all identically constructed, it is considered that the description of one will suffice.

The frame of the section is a rigid one and comprises a forward angle bar 1 and two rear spaced angle bars 2 and 3, the front and rear angle bars being connected together `at the inner end by an end bar 4t, at the outer end byspaced parallel end bars and 6 ,andV intermediately by two further suitably spaced bars 7 and 8. The bars are all fastened together by bolts 9,-the front and rear bars 1, 2k and 3 being positioned on top of the remaining bars.

'Ihe bars 4, Z and 8 navet-heir rearl ends bent downwardly in a semi-circular manner to provide opposing transversely aligned curved Shanks 10 and the bars 5and 6 have their rear ends turned downwardly and then rearwardly to form supporting brackets 5 and 6" which carry opposingbearings 11 and 12. The bearings 11 and 12 are each formed from two wooden blocks permanently fastened to the brackets by bolts 13and 14. yA. .l reinforcing cross bar 15 extends between the brackets. In the bearings I mount rotatably a comparatively Vshort counter shaft 16 to which is secured a Vchain wheel 17.

Centrally of their length, thebars 5, 6, v7 and 4 are provided on the under sides with aligned bearings 18 also formed from wooden blocks bolted to such membersl and these bearings i receive rotatably the main drivin@ shaft 19 of the section. To the shaft I secure the groundl wheels 2O and 21, the wheel 21 being adjacent to but within the bar 4; and the wheel 2O being 'positionedintermediately between the Y bars 6 and 7. j

A cha-in wheel 22 is secured to the outer end of the shaft 19 in a location between the bars 5 and 6. Directly in advance of the latter chain wheel, I mount an idler chain wheel 23 which is suitably carried bythe bars 5 and 6 and thesaid bars 5 and 6 are fitted also with upstand ing opposing brackets 24 and 25 which carry a short elevated shaft 26 on which a further e idler chain wheel 27 is mounted. A driving chain 28 passes-over the top side of; the chain wheel 22 rearwardlyaround the chain wheel v held there by wood screws 36 and 37 as shown 17, then forwardly over the cha-in wheel 27 and then around the chain wheel 23, the arrangement being such that the counter shaft is driven in the opposite direction to the driving shaft. The arrangement of chain wheels is such, also, that the counter shaft is rotated twice as fast as the driving shaft.

Y i To the lower end of each shank I fastenby bolts 29 a shoe 30. The shoe in each instance is formed from a metal casting and presents a forward tapering nose 3l and a tapering. heel 32 and has a forward transverse opening 33 therein and a rearward vertical web 34. The end of the shank is fastened by the bolts 29 to the web and a horizontally split wooden bea-ring block 35 is placed in the opening 33, being in Figure i7. A metallic spool shaped sleeve 38 is rotatably mounted in the block and the spools'of the various shanks of each frame section receive the rotary rod 39, the rod being fastened by a pin 40' in each instance to the spool. The inner end of the rod terminates beyond the innermost shoe of the section and the outer end of the rod is connected by a universal joint 4l to a short shaft 42 andthe outer end of the short shaft is connected by a universal joint 43 to the inner end of the counter shaft 16. j j

The rod 39 and the counter shaft in each instance are conta-ined in the same vertical plane but the rod is positioned lower than Vthe counter shaft as when the machine is in use,

the counter shaft must at all times be above ground level whilst the rod may work at Ground. Each frame various depths in the by an angular brace section is reinforce bar 44. 1

To the shank l() of each central bar S, I secure permanently a vertical standard 45 and these two standards in the two section inachine herein shown have their upper ends connected pivotally to a rear bar 46. The pivotal joint formed in each instance is as best shown in Figure 9 where it will be observed that the standard and the bar are provided with aligned holes which receive a short sleeve 47. Washers 48 are placed on the ends of the sleeve and a bolt'49 passing through the sleeve and washers holds the parts together.

The bar 46 is provided with similar spaced quadrants 50` and 51 permanently secured thereto and the quadrants supaort ro Vtatably the inner ends of similar a justing shafts 52 and 53, theouter-ends of which are carried rotatably in suitable bearings 54 and 55 permanently fastened tothe bar 46. Adjusting levers 56 and 57 aresecured to the inner ends of the shafts 52 and 53 and each is supplied with the customary hand latch 58 and detent 59, the detent operating over the quadrant in `each instance.

Y The outer ends of the shafts 52 and 53 are each supplied with a crank 60, the crank having' a collar 61 thereon and carrying rotatably tion is direct, simple,

i a sleeve 62 retained 'by a cotter pin or such like 63. A fork 64 is permanently fastened to the sleeve and the rear ends of the forks sup -V port rotatably a castor wheel 65. The castor wheel in each instance is located centrally to the rear `of the section so that the section is supported forwardly by two ground wheels and rearwardly by a single castor wheel, the three wheelsbeing arranged in substantially a V-sliaped formation.

t is particularly to be noted that the frame of each section is a rigid structui'e andcarries the rotary rod and that the depth at which the rod works in the ground is gauged by lowering the rear end of the frame through the manipulation of the adjusting shafts 52 and 53. l

A draw bar 66 is located in advance ofthe frame sections and the draw bar is connected to the section A by two short chains 67 and Abe and to the section by two relatively longer chains 69 and 70. 'lhis arrangement sets the section A slightly in advance of the section and so places the rotary rod Vof the section A slightly inadvance of that of the section B andpermits of the lapping soto speak of the inner ends of the rods. Hitch-V ing eyes 7l and 72 aresecured to the oppositeV ends of the draw bar.

ln a machine so constructed, each section is entirely free of the adjacent section in its work andthe arrangement of thelwheels is such that the sections can readily and independently accommodate kthe-various irregularities in the ground surface and the three point suspension so to speak of each section permits of the employment of a rigid frame which is not subjected to twisting due to irregularities in the ground surface.

A seat 73 for the driver is carried by the bar 46 being located between the levers and obviously, the driver can readily adjust the depth at which the rods of the sections Work f by manipulating eitherlever. The draw bar and chains serve to space the forward ends of the sections and the bar 46 spaces the rear ends thereof, such structure providing a flexible spacing connection `between the frames. The drive emcployed for eachsecurable and effectiveV and the shape of the shoes is such that they i wardly disposed and centrally located adjustable castor Wheel.

3. A multi-section rod weeder having the rod of each section independently driven and independently adjustable in relation tothe ground and the frames thereof exibly connec-ted and spaced and each supported by three ground Wheels arranged substantially in V-shaped formation.

Il. In a rotary rod weeder, weeder sections formed from similar rigid frames flexibly connected together and each supported forwardly by a pair of ground wheels and rearwardly by an adjustable centrally located castor wheel, a rotatably mounted earth working rod carried by each frame and a driving connection between one of the ground Wheels of each frame and the rod thereof.

5. A rotary rod weeder comprising substantially rectangular sections arranged end to end and presenting substantially rectangular rigid frames, a pair of forward ground wheels supporting each section, a draw bar yiexibly connected to the front sides of the section for rotating the rod of that section, an

upstanding standard secured to a selected shank of each section, a spacing bar pivotally connecting the standards, a pair of adjusting shafts rotatably carried by the latter bar, said shafts being provided at their outer ends with cranks, castor wheels swivelly attached to the shanks and located centrally rearwardly of each section and adjusting levers secured to the adjusting shafts.

Signed atlVinnipeg, this 8th day of Novernber, 1926. y

NELSON JACKSON. 

